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1.1 This specification covers a group of requirements which, with the exceptions of Section 4.3, Section 12, Section 19, and Section 20, are mandatory requirements to the ASTM pipe product specifications noted below unless the product specification specifies different requirements, in which case the requirement of the product specification shall prevail.

1.2 Sections 4.3 or 19 are mandatory if the product specification has a requirement for product analysis or flattening tests.

1.3 Section 20 is mandatory if the product specification has a hydrostatic test requirement without defining the test parameters.

1.4 Section 12 is for information only.

1.5 In case of conflict between a requirement of the product specification and a requirement of this general requirement specification, only the requirement of the product specification need be satisfied.

Title of Specification ASTM Designation^ASeamless Carbon Steel Pipe for High-Temperature ServiceA106Seamless and Welded Austenitic Stainless Steel Pipe A312/A312M Seamless and Welded Steel Pipe for Low-Temperature ServiceA333/A333M Seamless Ferritic Alloy-Steel Pipe for High-Temperature ServiceA335/A335MElectric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service A358/A358MCarbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service A369/A369M Seamless Austenitic Steel Pipe for Use With High-Temperature Central-Station ServiceA376/A376M Metal-Arc-Welded Steel Pipe for Use With High-Pressure Transmission SystemsA381Seamless Ferritic Alloy-Steel Pipe Specially Heat Treated for High-Temperature Service A405Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature ServiceA409/A409M Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature ServiceA426Austenitic Steel Forged and Bored Pipe for High-Temperature ServiceA430/A430MCentrifugally Cast Austenitic Steel Pipe for High-Temperature ServiceA451Centrifugally Cast Austenitic Steel Cold-Wrought Pipe for High-Temperature Service A452Seamless Carbon Steel Pipe for Atmospheric and Lower Temperatures A524Centrifugally Cast Iron-Chromium-Nickel High-Alloy Tubing for Pressure Application at High Temperatures A608Centrifugally Cast Carbon Steel Pipe for High-Temperature ServiceA660Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures A671Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate TemperaturesA672 Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures A691 Seamless, Welded Ferritic, and Martensitic Stainless Steel Pipe A731/A731MSeamless and Welded Ferritic/Austenitic Stainless Steel PipeA790/A790MSingle- or Double-Welded Austenitic Stainless Steel PipeA813/A813MCold-Worked Welded Austenitic Stainless Steel Pipe A814/A814M Centrifugally Cast Ferritic/Austenitic Stainless Steel Pipe for Corrosive Environments A872
^AThese designations refer to the latest issue of the respective specifications.

1.6 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation (SI) of the product specification is specified in the order.

Note 1--The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as "nominal diameter," "size," and "nominal size."